[PATCH 3/3] i2c: slave: add documentation for i2c-slave-eeprom

[Wolfram Sang]

From: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx>

Signed-off-by: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx>
---
 Documentation/i2c/slave-eeprom-backend | 14 ++++++++++++++
 1 file changed, 14 insertions(+)
 create mode 100644 Documentation/i2c/slave-eeprom-backend

diff --git a/Documentation/i2c/slave-eeprom-backend b/Documentation/i2c/slave-eeprom-backend
new file mode 100644
index 00000000000000..c8444ef82acfa3
--- /dev/null
+++ b/Documentation/i2c/slave-eeprom-backend
@@ -0,0 +1,14 @@
+Linux I2C slave eeprom backend
+==============================
+
+by Wolfram Sang <wsa@xxxxxxxxxxxxxxxxxxxx> in 2014-15
+
+This is a proof-of-concept backend which acts like an EEPROM on the connected
+I2C bus. The memory contents can be modified from userspace via this file
+located in sysfs:
+
+	/sys/bus/i2c/devices/<device-direcory>/slave-eeprom
+
+As of 2015, Linux doesn't support poll on binary sysfs files, so there is no
+notfication when another master changed the content.
+
-- 
2.1.4

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